Paper cutter



Aug; 18, 1931. P. A. AsPENLElTER y 1,819,727

PAPB GUTTER Filed-Maren 5. 1929 Se 8 6 y as 5g 25 a7 f 22 Patented Aug.18, 1931l f UNITED STATES PATE PETER n. nsrnNnnrrna, oF CINCINNATI,OHIO, vessIeNoR, :3jrl IvIEsNE AssIeNMENTs, o UNITEDAUTOGRAPHIC.REGISTERoo., OF CHICAGO, ILLINoIsn CORPORATION e or ILLINOIS Application inea'March 5,

This invention relatesto an improved paper cutter; which is designedwithv an object of preventing injury tothe user of the cutter at thetime of feeding paper between the 5 blades of the cutter.

A further obj ect is to produce a paper cu t- Ater especially designedto be used in certain types of ,oiiice appliances `wherein continuouswebs of paper are employed for purposes of 10. making records, andwherein portions of the webs are-removable after having made such lrecords. v

Afurther object is to produce a paper cutter especially designed tobeused where it 15 would be desirable to Vremove one or both of.the'lrnivesof the cutter fromv proximity with the edges of the paperYwebs in order-,that ftheymay be grasped andfed forwardlybetween theknivesvprevious to the :severlng operation.

' `-These and other objects are attained in the paper cutter describedand claimed in the'following specification and illustrated in theaccompanying drawings, in which :.l

2 Fig. 1 is a fragmental side elevation, somewhatin section, showing anOffice appliance v equipped with a'paper cutter embodying my invention.

Figf2is a view similar to Fig. 1, butshow- 30 ing the parts in differentpositions.

" The machine in connection with whic'hI have chosen to illustrat'emyinventiontisone especially ldesigned to. facilitate the typing ofbilliforms in multiple and is intended for 35' use vwith a typewriterconstruction, lnot 5 series of webs 7 bearing the printed forms.

These: webs. are aligned at their forward edges 8 over aligningpins orhooks 9' which enterfperforations in the webs. at their for- Ward edges.Such a clamping bar 6 is mount- 50 ed on pins 10 on each side of thewebs to be Nr OFFICE PAPER CUTTER.

1929. serial No. 344,288.

clamped in amanner so that the pins reciprocate vertically and clamp orrelease the webs through ythe agency of the bar 6. They vreciprocationis caused by theJr engagement of an operating pin llfwiththe forkedyelement .12 at the lower endvof each pinV 10,y the pin .11. engagingtherslot in the fork and being causedrtol move therein by'means of therocker arm 13 which carries each of the pins 11. Thisfrocker arm ismounted on a shaft move up .or down to cause operation of the Vclampingbar 6'. Each rocker:` arm has a forked endl in which a pin 16 on a lever17 operates in orderthat the rocker armmay be ymoved. Each lever 17 ispivotedon a shaft 18'ex'tendingbetween the side bars 4 so that whenpoweris applied Vto each lever 17as at a point 19 between its-'endsytherocker arm:

will be caused'to reciprocate. This pin- 19 af-y fords connectionbetween each lever'17 and a yoked lever 20. This lever has no directpivotal connection,y but preferably bears by means of an extended linger21 oneach 'endofthe yoked lever against the shaft14 carrying the `rockerarm. The opposite end 22 of theyoked lever carries the hooked end 23 ofa link 24 which extends downwardly to a foot treadle, not shown, so thatoperation of the lever-connected linkage may be caused to function theclamping bar 6. Y

In Fig. 1 the web-released position of the `clamping bar 6 is shown, andin Fig.V 2 the web-clamping position of the clamping bar is shown. ,Inorder to cause the linkage to function s-o as to bring about theseresults,-I :provide fingers 25 and 26 extending from and attached to therespective shafts- 14` and 18.` These shafts are hooked at their lowerends for attachment of the ends of a coil tension spring 27. The effectof this-.spring risto draw. the ngers toward one another, therebyrocking the shafts 14 and 18, lifting levers 17 and rocker arms 13, andcausing pins 11 to bear downwardly upon yokes 12 which cause bar 6normally to clamp .the webs as shown in Fig. 2. Release of the webs isfacilitated by vdownward movement of rod 24 through pre's- .100

sure uponits attached foot treadle, therebyy 4:14 extending between thesides 4 so that when -the shaft 14 is rotated the rocker arm` willpulling downwardly upon the yoked lever 20 at its end 22, causing it topivot upon the pins 19 and bringing its ends 21 against shaft 14 so thatthe pins 19 will be drawn downwardly and therefore cause levers 17 to bedrawn downwardly by pivoting on shaft l18 so that pins 16 thereof willoperate in the slots of forked ends 15 of rocker arms 13. This causesrocker arms 13 to bring their pins 11 upwardly thereby lifting pins 10and clamping bar G to the position shown in Fig. 1 so that the webs ofpaper are free to be released.

Cooperating with the mechanism l have just described is the paper cuttermechanism which is located forwardly of the frame carrying theweb-clamping and releasing mechanism which has just been described. Thispaper cutter mechanism'is quite independent of the web-clamping andreleasing mechanism, but, although cooperating therewith in thefunctioning of the machine, is designed to be operated alternately withthe operation of the clamping and releasing mechanism, being operated,however, by hand instead of by foot as Vis the clamping and releasingmechanism through its treadle foot. This paper cutter mechanism isoperated by a handle 28 mounted on a shaft 29 between plates 30 at theforward end of the machine frame. Upon shaft 29 at eachV side of theframe and v adjacent to the plates 30, is a gear segment 31 which mesheswith the teeth of a rack 32 at each side of the frame and out of thepath of travel of the paper webs as they are drawn through the machinebetween the racks. Connecting the'racks is a cutter bar or knife 33extending across the websl and adapted to be -Y brought downwardly uponthem upon lifting movement of handle 23. rlhe lower ends of the racks 32are rounded to provide in eect cam-shaped surfaces 3i adapted tocooperatel with the face of a rocking bar 35 pivoted at a point 36 ineach 'plate 30. This bar 35 carries a knife 37 which, when the racks 32are moved downwardly, will be forced to occupy a position'such as shownin Fig. 2, against the back of knife 33 so that as the knife edges'moveover each other in shearlike fashion, the webs projecting-beyond thecontacting faces of the knives willbe out off. A short spring 33 bearsagains the lower end of pivoted bar 35 to cause the bar normally tooccupy the position shown in Fig. 1, but when the racks are moveddownwardly, to'b'e compressed as shown in Fig. 2.

This'feature of' a pivoting knife-bar is an important feature of theinvention in that it performs two functions which, among others, areimportant. First, such a pivoting bar permits of sufhcient clearanceaway from the webs as 'to permit the fingers of the operator graspingthe webs for pulling them forwardly Vofl the aligning hooks 9.movement'of the lower knife away from contact with the upper knife 33,also causes the first-mentioned blade,

3.- Apparatus of the Second, the

operation of the machine to be much safer by preventing the lingers ofthe operator being cut or scratched in pulling the webs forwardly .or ineven attempting to grasp the forward edges of the webs.

The lever 28 acts as a weight to keep the blades in their separatedposition.

Having thus described my invention, what I claim is:

l. Apparatusy of the kind described comprising ablade, a secondblade'cooperating therewith, means including a manually operable pivotedlever for reciprocating the and means for pivotally mounting said secondblade, said Vlast-mentionedmeans being adapted to c0- operate with thefirst-mentioned means to bring said second'blade into a functionallyoperative position each time the first mentioned blade is reciprocated.

2. Apparatus of the kind described comprising a pivoted lever, a pinionrotatable by `said lever,a rack meshing with said pinion,

a blade carried bysaid rack, a second blade cooperating with thefirst-mentioned blade,

and means movable with the second blade and adapted to cooperate withsaid rack to bringfsaid second' blade into afunctionally operativeposition. Y

prising a pivoted lever, a pinion rotatable by said lever, arrackmeshing with said pinion, ablade carried by said rack, a second bladepivotally mounted vand cooperating with the first-mentioned blade, andmeans movable withY said second bladev and adapted to cooperate withsaid v'rack tobring said second Vblade into a functionally operativoposition.- f.' 4.. Apparatus of the kind described comprising a movableblade, a second movable blade cooperating therewith, means forreciprocating the first-mentioned blade, the weight of said meansnormally holding the first-mentioned blade spaced from saidsecondvblade. and means constrained to move with said'second blade andadapted to covvoperate with the first-mentioned'means for bringing saidsecond blade into a functionally operative position each time thefirst'A mentioned blade is reciprocated.

vspaced from said second blade, andY means for pivotally mounting said'second blade, theA last-mentioned means having a part secured theretoadapted to cooperate with the firstmentioned means for bringing saidsecond blade into a functionally operative position each time thefirst-mentioned blade is reciprocated. V

6. Apparatus of the kind described comprising a movable blade, asecondmovable blade cooperatingtherewith,meansincluding a .lever forreciprocating the'rst-mentioned blade, the Weight of said lever beingutilized to-hold the first-mentioned blade spaced :from said secondblade, means for pivotally mounting said second blade, the last-mentioned means having a part secured thereto adapted to cooperate With theiirst mentioned means for bringing said second blade into a functionallyoperative position4 each time the first-mentioned blade is reciprocated,and yielding means for holding said blade in a functionally inoperativeposition. v

7. Apparatus of the kind described comprising a blade, a second bladecooperating therewith, means for reciprocating the firstmentioned blade,means for pivotally mountlng said secondblade, and cam meansconvstrainedto move withthe iirst mentioned blade for bringing the second blade intoits functionally operative position each time the first-mentioned bladeis reciprocated;

Inl testimony whereof I hereunto aiiix my signature. n

PETER A. ASPENLEITER.

